Once arrested, Mays will be booked with being an accessory after the fact to armed robbery. Detectives are still searching for his alleged accomplice, Hendrick "Lil Hen" Porter, 18, of Harvey, Fortunato said. Porter faces two counts of armed robbery.

The Sheriff's Office arrested Antonio Marcelin, 19, of New Orleans, Monday and booked him with being an accessory after the fact to armed robbery in the case.

Detectives are still trying to identify a fourth suspect who authorities say was with Marcelin, Porter and Mays when the unidentified 39-year-old woman and her 14-year-old daughter were carjacked in the 600 block of Bonnabel Boulevard about 9:40 p.m.

Investigators have said the woman stopped to help two men who were parked on the side of the road with a disabled, green Ford Explorer. But once she pulled behind the SUV, two armed men ordered her and her daughter out of her 2008 Chevrolet Cobalt.

Two other men got out of the SUV, joined the gunmen in the Cobalt and then drove off. The stolen car was later recovered Tuesday (July 29) somewhere in the 4th District, authorities said.

Investigators processed the Cobalt for evidence and found Mays' fingerprints on the car, Fortunato said. They obtained a warrant for his arrest, but have not been able to find him.

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Anyone with information on the whereabouts of Lyndell Mays or Hendrick Porter, as well as the identity of the fourth suspect, is asked to call the Sheriff's Office investigations bureau at 504.364.5300. The public can also call Crimestoppers at 504.822.1111 or toll-free at 877.903.7867. Tips can be texted to C-R-I-M-E-S (274637); text TELLCS then the crime information. Callers or texters do not have to give their names or testify and can earn a $2,500 reward for information that leads to an indictment.